Improvement in Mechanical Properties of Self-lubricating Tungsten Carbide Sintered Body Including Carbon Onion

Fabrication and Mechanical Properties of Sintered Leucite Body

for leucite using natural minera} potash feldspar as the major raw material, followed by bal) milling. A sintered leucite body with a 99.0% re)atiye density was obtained by heating the leucite powder cylindrical pellet at 12500C for 1 h. The mechanical properties of this dense teucite body were determined. The bending strength, fracture toughness, e)astic modulus and Vickers hardness of the bod...

The Mechanical and Electronic Properties of Carbon-Rich Silicon Carbide

A systematic investigation of structural, mechanical, anisotropic, and electronic properties of SiC₂ and SiC₄ at ambient pressure using the density functional theory with generalized gradient approximation is reported in this work. Mechanical properties, i.e., the elastic constants and elastic modulus, have been successfully obtained. The anisotropy calculations show that SiC₂ and SiC₄ are both...

Carbide formation in tungsten-containing amorphous carbon films by annealing

Tungsten-containing amorphous carbon films were produced by dual magnetron sputter deposition. The formation of carbide phases after heat treatment in inert gas at temperatures up to 2800 K was investigated by X-ray diffraction for tungsten concentrations below 25 at%. After deposition, each film consists of an amorphous carbon matrix with atomically dispersed W inclusions. Annealing up to 2800...

Letter: Electronic and catalytic properties of tungsten carbide.

Humidity and mechanical properties of onion skins

Strength, stiffness, strain at fracture and moisture content of onion skins were measured after incubation at a range of humidities. Higher relative humidity (RH) resulted in skins which had greater moisture content, were stronger in multi-directional tests and which were less stiff. In uni-directional tests, skins incubated at higher RH had extended more at fracture than those incubated at low...